Abstract
Understanding the dynamic responses of rock subject to complex dynamic disturbances is of great importance for construction and operation of rock engineering. In this paper, development of a multi-axial and multi-directional synchronous coordinated control loading Hopkinson bar (MSCHB) system is proposed, which could provide a cutting-edge testing platform for investigating rock dynamic behaviours with consideration of the coupled effect of multi-axial and multi-directional dynamic loads and 3D static in situ stresses. The motivation, composition, and function of the MSCHB are introduced. Some innovative and essential rock dynamic tests, including 3D dynamic compression test, 3D dynamic tension test, and 3D dynamic shearing test, etc. subjected to the coupled complex dynamic and static loading conditions are put forward. The establishment of the MSCHB will promote the laboratory testing of rock materials in multiple dynamic loading conditions, and facilitate the development of the 3D dynamic theory and application in rock engineering.
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